Wireless telegraphic apparatus.



Patented May 9, 1911.

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M. A. PARISANO.

WIRELESS TELESE-APHIS APPARATUS.

APPLICATION FILED MAY 27, 1910.

wits/momo MA. PARISANO.

WIRELESS TELBGRAPHIO APPARATUS.

Patented May 9, 1911.

4APPLICATION FILED MAY 27, 1910.

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WIRELESS TELBGRAPHIG APPARATUS,

APPLIATION FILED MAY 27, 1910.

Patented May 9, 1911.

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.....mmiwmm 7% a? wwf/WLM QW 'b1/wonen @ricamati a MICHAEL A. PARISANO, F NEW YORK, N. Y.

WIRELESS TELEGRAPHIC APPARATUS.

Specification of Letters Patent.

Application May 27, 1910. Serial No. 563,802.

To all whom t may concern: l Be it known that I, MICHAEL A. PARI- sANo, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and` useful Improvements in Wireless Telegraphic Apparatus; and I do hereby declare the following to be a full, clear, and exact description of they invention, such as will enable others skilled in the art to which it appertains to make and use the saine.

This invention relates to wireless telegraphy and has for its object to produce a device of this nature which will be compact inI construction, comparatively inexpensive to manufacture, and one which may be used 'indoors as we`ll as outside.

` To these ends, the invention consists in the novel details of construction and combinations of parts, more fully `hereinafter disclosed and particularly pointed out in the claims.' A a Referring to the accompanying drawings forming a part of this specification, in which like numerals refer to like parts in all the viewsz-Figure l, is a view in elevation of a device made in accordance with my invention; Fig. 2, is. a plan view of the same taken on the line 2-2 of Fig. l, with the slate top slab removed; Figs. 3 and 4,

are detail views of some. of the lamps employed in connection with my invention; Fig. 5, is a bottom plan view of the topmost slate slab shown in Fig. 1, and illustrating the connections with the bulbs carried by.

said slab; and, Figs. 6, 7 and 8, are detail views of various forms of bulbs employed vin connection with my invention. 1 indicates any suitable framework, preferably of a rectangular construction and 2, 3 and 4, indicate slabs of slate or other nonconducting material carried by said framework and provided with numerous perfora tions through which the strands 6 of the continuous antenna wire are passed. Thesel strands 6 constitute the principal means for radiating the Hertzian waves and may be interlaced up and down through the perforations in the slate slabs inany suitable manner, but I prefer to pass them'back upon themselves as shown, so as to lessen the effects of self-induction and to bring out a the end 7 of the wire at or near the center prefer to pass these strands through the perforations in the slate slabs in such a Patented May 9, 1911.'

manner that the individual loops will lie in a continuous spiral, as indicated in Fig. 2. At or near the bottom of the framework 1 I preferably provide a series of sockets 10, l1, 12, 13 and 14, which are connected respectively with various portions of the spiral by wires 15, 16, 17, 18, and 19, as best shown in Fig. 2. In addition to the above sockets, I `also provide a socket 20 in which the plug 21, carrying the connections `22 with the sending instruments, maynormally rest when theantenna is not used for sending.

Above the slab 2 is a topmost slab 23, the

bottom of which is provided with connections- 24 leading to the bulbs, aswill be further explained. 'This connection 24 leads from the center binding post.' 26 to which the end 7 of the antenna also leads, I f

as will be clear from the drawings.

On the top surface'of the slab 23 and in electrical connection with the connections 24 are the bulbs shown each. provided with the usual screw plug fitting the ordinary sockets and the usual leading in wires 29, see especially-Fi s. 6 and 8. These leading in wires 29, pre erably terminate iir a metallic connection which may be iron filings 30, mercury31, or any other suitable material. I prefer, however, to employ twelve pairs of globes and to use one of the fol-- lowingsub'stances' in each pair-mercury, lead: filings, powdered carbon, powdered 4copper, brass filings, steel filings, soft iron lfilings, cast iron filings, aluminum lfilings, zinc. filings, silver filings, and nickel filings,

all in a fine or granular form. The interior of the globes are exhausted of air, as usual, and approaching very'close to the mercury 31 is a wire 32, as shown in'Fig. 8, leaving Va micrometer spark gap 33. This wire 32 is connected, in the form shown in Fig. 8, with the metallic cap 34, which is adapted to receive Hertzian waves. p

In the form shown in Fig. 6, the wire 32 extends below the surface of the metal filings and preferably terminates between lthe two wires 29.

In the form shown in Fig. 7, I preferably Awind one of the wires 29 into a spiral 36 around-a metallic bar 35 which is connected with the wire 32, which, in turn, is connected lwith the metallic cap 37,7as shown.`

The spiral 36, may,A if desired, be covered with enamel and the bar 35 is preferably of In the form shown in Fig. 3, the wires 29 are joined to silver plates 40, between which' rests the metallic plate 41, insulated .from

the plates 40, asshown. The plate-,41 vis connected by vthe Wire 32 to the metallic .cap 34, as'abovedescribed. y

Theiform shown' in Fig. 4,'vis substantially" Athe same as the forinshown in-'I `ig. 3, except the chaiinel 50 enters the interior-of the globe and permits la vregulation of the All ofthe bulbs may be disconnectedfrom Athe loops 6 by a switch notr shownl when sending, andof course, said bulbs may be also unscrewed, if desired, from their sockets, when the IIertZian waves will be emitted fromthelantenna loops 6 alone.

The operation vof my deviccis as follows r-In sending signals, the plug -21 is connected by meansof thev wires 22'with an induction coil ,or any 'other 'suitable well known source of'Hcrtzian waves, when it;i s placed vin one ofthe sockets 10, 11, 12, 13' or 14. Thereu iona O`reater or less'v number of loops 6 of the antenna will'ibe-connected with the induction coil or other source ofcurrent, and,therefore, a greater or less radiating surface for saidwaves will be provided. In order that the outer loops 6 may. not act as a screen for the inner loops when fthesending plug 21 is. placed in an innerV socket such as 10, 11 or 12, I provide dummy connecting plugs, 'not shown, for all the l sockets lying outside of, or as seen in Fig. 2,

to the right of. the socket used. Thislias the effect offinaking all theouter loops con- -tinuous, and therefore causes them to act as radiating surfaces. vThese waves when sent are'ieceived 4at the dist=antstation in the ordinary manner.' When receiving withmy instrument, however, a receiving plug, in all the receiving plugandeictuate'the Vreceiving` instrument, which inay be of anywell known Y and suitable construction. lIn actual use I lia-ve employed a' colierer of my own construction containing metal filings, andlvvery similar' to the well known Marconi coherer,

By shifting the receiving plug into different combination of `ari-antenna consisting of a sockets 10, 11, 12, 13 and 14, different degreesof `sensitivenessfor the antenna used -maybe secured.

l /Vhat I'claim is l l l1. In a wireless telegraphic apparatus, the

continuous wire and comprisinga'plurality of loops; perforated supports through which said loops are threaded; a plurality of sockets; a plurality of connections between said loopsand sockets, said connections joined to. said wire'at varying distancesfrom its end; and aco'nnecting plug adapted to fit said sockets, substantiallyas described. i

2. In a wireless telegraphic apparatus, the combination of an antenna wire provided with` aplurality 1 of loops yarranged 4in aspiral a-.so'cket to which one: end ofsaid wire 'is' connected; a binding'post to which the other .end of said wire is joined; a plurality of lamp bulbs connectedto said bind-` ing post; andmeans ,carried'by'said-bulbs.

' adapted to receive and to transmit Hertzian :u

waves, substantially asY described.

,3. In a wireless telegraphic apparatus, the combination ofofuan antenna wire provided with va' plurality of Vloops --arranged in a spiral; a" socket vto which one endV of, said wireis connected; :ij-plurality of additional sockets; connections with said'antenna wire '90 and-said last mentioned sockets at `varying .distances from said ends; a `binding post to which the other end of said wire is joined; a pluralityl oflainp'bulbs connected to said binding'post; and means carried by said bulbs comprising micrometer'spark gaps, adapted to receive and to transmit I-Iertzan waves, substantially as described.

4 .In a wireless telegraphic apparatus, the.v

combination of a framework; a plurality of 'perforated slabs supported byl said framework; a continuous wire interlaced in spirally arranged loops through said slabs; av

socket joined tofone end of 'said wire, a binding post wire; a plurality of other sockets. joined to saidfwire at varying distances from saidv first mentioned'. end; a topmost slab provided with aplurality of lamp sockets5connections between said binding post and .said 11.0

sockets; and a plurality of bulbs provided -wvith exterior metal capsand interior rn-icroineter-spark gapsittiiig said sockets, snbstantially as described.

In testimony whereof, I affix inyfsigna- 115 ture, in presence of two witnesses. l

' MICHAEL A.' PARISANO.

Witnesses:

CH'As. A. CoNLoN, y 'llosiirH-'LQI-IUNT.

oined to the other end of said 

